My 10 most important publications

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1. "High Precision Astrometry with a Diffractive Pupil Telescope" [pdf]
   Guyon, O., Bendek, A., Eisner, J., Angel, R., Woolf, N., Milster, T., Ammons, S., Shao, M., Shaklan, S., Levine, M., Nemati, B., Pitman, J., Woodruff, R., Belikov, R.
   The Astrophysical Journal Supplement, Accepted for publication Jan 11, 2012 (2012)
   
   Describes a new concept allowing simultaneous high precision astrometry to identify exoplanets, characterize their orbits and masses, and direct coronagraphic imaging. NASA-funded demonstration is ongoing.


2. "High performance PIAA coronagraphy with complex amplitude focal plane masks" [pdf]
   Guyon, O., Martinache, F., Belikov, R., Soummer, R.
   The Astrophysical Journal Supplement, Volume 190, Issue 2, pp. 220-232 (2010)
   
   New coronagraph concept, significant improvement over conventional PIAA coronagraph. Allows to reach extremely high contrast (1e10) at less than 1 lambda/D separation, even on segmented apertures.


3. "High Contrast Imaging and Wavefront Control with a PIAA Coronagraph: Laboratory System Validation" [pdf][astro-ph]
   Guyon, O., Pluzhnik, E.A., Martinache, F., Totems, J., Tanaka, S., Matsuo, T., Blain, C., Belikov, R.
   PASP, Volume 122, pp.71-84 (2010)
   
   First high contrast demonstration of coronagraphy at 2 lambda/D. Includes new self-calibrating focal-plane based control loop. Demonstrates control of coherent speckles at 1e9 contrast level.


4. "High Sensitivity Wavefront Sensing with a non-linear Curvature Wavefront Sensor" [pdf][astro-ph]
   Guyon, O.
   PASP, 122, pp.49-62 (2010)
   
   New concept for high sensitivity wavefront sensor. Works at the sensitivity limit imposed by telescope diffraction instead of seeing limit. NSF-funded demonstration is ongoing.


5. "Coronagraphic Low Order Wavefront Sensor: Principle and Application to a Phase-Induced Amplitude Coronagraph" [pdf]
   Guyon, O., Matsuo, T., Angel, R.
   ApJ, 693, pp 75-84 (2009)
   
   New concept to control pointing errors in a coronagraph. Provides laboratory demonstration of pointing control at the 0.001 lambda/D level, sufficient for 1e10 contrast coronagraphy.


6. "Near-Infrared Adaptive Optics Imaging of QSO Host Galaxies"
   Guyon, O., Sanders, D.B., Stockton, A.
   ApJ Suppl., 166, 89-127 (2006)
   
   Adaptive optics imaging survey of 32 bright quasars: 30 host galaxies detected. Provides strong evidence for galaxy mergers fueling the central black hole.


7. "Theoretical Limits on Extrasolar Terrestrial Planet Detection with Coronagraphs" [pdf]
   Guyon, O., Pluzhnik, E.A., Kuchner, M.J., Collins, B., Ridgway, S.T.
   ApJ Suppl, 167, 81-99 (2006)
   
   Established from first principles what are the fundamental limits to high contrast imaging in the absence of wavefront aberrations. Compares current coronagraphs designs to this limit.


8. "Limits of Adaptive Optics for High Contrast Imaging" [pdf]
   Guyon, O.
   ApJ, 629, 592-614 (2005).
   
   Provides quantitative estimates of the fundamental limits to high contrast imaging due to residuals in adaptive optics systems correcting atmospheric turbulence.


9. "Exoplanet Imaging with a Phase-induced Amplitude Apodization Coronagraph. I. Principle" [pdf]
   Guyon, O., Pluzhnik, E.A., Galicher, R., Martinache, F., Ridgway, S.T., Woodruff, R.A.
   ApJ, 622, 744-758 (2005)
   
   Detailed description and analysis of the PIAA coronagraph concept. Includes design of optics and performance estimation.


10. "Phase-Induced Amplitude Apodization of Telescope Pupils for Extrasolar Terrestrial Planet Imaging"
    Guyon, O.
    A&A v.404, p.379-387 (2003)
    
    First paper describing the PIAA coronagraph concept, offering high performance thanks to a lossless beam apodization scheme using aspheric optics. PIAA now under development in US and on Subaru.